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ITS » Master Theses » Teknologi Proses - S2
Posted by aguss at 11/01/2007 13:49:04  •  25537 Views

Desorption of Chlorine from Sodium Hypochlorite Solution in The Trickle Bed Reactor

Author :
Syauqiah, Isna 


Pencemaran air adalah suatu masalah lingkungan yang harus mendapat perhatian yang serius dimana biasanya limbah cair dari industri yang dibuang ke sungai seringkali mengandung unsur berbahaya seperti Cl Fe 2 Fe3 Cr Pb2 dan lain-lain khusus untuk limbah cair yang mengandung khlor dari industri seperti kaustik soda pulp dan kertas MSG dan VCM. Penelitian ini bertujuan untuk mempelajari proses desorpsi gas khlor dari larutan yang mengandung khlor dalam reaktor trickle bed yang berisi packing raschig ring dan melakukan analisa proses desorpsi dengan model perpindahan massa disertai reaksi kimia. Percobaan dilakukan dalam reaktor trickle bed dengan spesifikasi kolom acrylic yang berdiameter 46 cm dan panjang 35 cm packing raschig ring d 03 cm dan 1 085 cm. Larutan yang mengandung khlor bebas dibuat dengan melarutkan sejumlah sodium hypochlorit NaOCl dalam air dengan penambahan asam khlorida HCl. Kondisi operasi percobaan sebagai berikut bekerja pada tekanan atmosferik dan suhu kamar dengan variabel percobaan konsentrasi larutan NaOCl mula-mula 00015 - 0077 molL dan variabel percobaan yaitu pH larutan 1 - 5 laju alir liquid 17 cm3s - 2578 cm3s dan laju alir gas 84 cm3s - 232 cm3s. Hasil penelitian menunjukkan bahwa konsentrasi total khlor Cl2av menurun fungsi waktu berarti terjadi proses desorpsi. Proses ini ditunjukkan secara nyata dengan penurunan pH. Dan juga penurunan konsentrasi Cl2av dalam larutan sedikit dipengaruhi oleh laju alir liquid dan gas. Proses desorpsi ini dapat dimodelkan dengan model yang berdasarkan pada dekomposisi reaksi kimia dan perpindahan massa dengan parameter model K sebagai konstanta global yang dipengaruhi oleh konstanta kinetika dekomposisi dan koefisien perpindahan massa overall. Model dapat ditunjukkan secara baik dengan data percobaan.


Water pollution is one of the environmental problem that must take a serious attention where usually the waste water from certain industry is released to a river often still contain dangerous substance such as Cl Fe2 Fe3 Cr2 Pb2 etc. particularly for waste water containing chlor from industry such as Caustic Soda pulp paper MSG and VCM plants. The objectives of this research are to study desorption process of chlorine from solution containing chlor in the trickle bed reactor packed with raschig ring and to analyze of this process with model of mass transfer accompanied chemical reaction. The experiment conducted in the trickle bed reactor with the following specification acrylic column with 4.6 cm diameter and 35 cm length raschig ring packing 0.3 cm diameter and 0.85 cm length. The solution aqueous containing free chlorine is made from dissolving a certain quantity of sodium hypochlorit NaOCl in water with addition of hydrochloric acid HCl. The operating conditions of experiment are room temperature atmospheric pressure and initial concentration of NaOCl 00015 - 0077 molL and the experiment varibles are pH of solution 1 - 5 gas fiow rate 84 - 232 cm3s mls. liquid flow rate 17 - 2578 cm3s. The result of experiment shows that the total chlorine concentration Cl2av decrease as function of time it means that the desorption process occur. This process significantly increased with decreasing pH. And also the decreasing concentration of Cl2av in the solution is slightly influenced by liquid and gas flow rate. This desorption process can be modelized by an model based on chemical reaction decomposition and mass transfer with the parameter model K an global constant that can be influenced by constant of kinetics decompositipn and overall mass transfer coefficient. The model can be well represented the experimental data.

KeywordsSodium Hypochlorite
Subject:  Pencemaran air
  1. Dr. Ir. Mahfud, DEA
Date Create: 11/01/2007
Type: Text
Format: pdf, 41 pages
Language: Indonesian
Identifier: ITS-Master-31000004019706
Collection ID: 31000004019706
Call Number: 628.166 2 Sya

Theses Chemical Engineering

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